Marsden's credits are numerous and span a half century of widely, and wildly, different genres and character types. Not the least is his portrayal of the mysterious and mystical character John Stockton in the long-running ITV series The Case-Book of Sherlock Holmes (1991) starring Jeremy Brett. In The Last Vampyre (1993) Marsden brings, literally to life, Sir Conan Doyle's take on the ages' old, indeed historic, legend most known to modern viewers through Bram Stoker's 1897 Gothic horror novel "Dracula."